Grip portion of a bottle



FIG. 1 is a top, front and right side perspective view of a grip portion of a bottle showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a right side elevational view thereof; and,

FIG. 5 is a top plan view thereof.

All surfaces not shown form no part of the claimed design.

The broken line showing of a bottle is included for the purpose of illustrating only and forms no part of the claimed design. 

The ornamental design for a grip portion of a bottle, substantially as shown and described. 